Chevy LS2 4.005" Bore 1.115" .927" Flat Top Forged Pistons Speedmaster breathers keep your crankcase

Speedmaster breathers keep your crankcase properly vented and add a little shine under the hood

intake valve with minimal additional work

measuring 102mm

with durable chrome plating for good corrosion protection and long life

Using only three parts--a laser-welded sealed housing

Chevy LS2 4.005" Bore 1.115" .927" Flat Top Forged Pistons Speedmaster breathers keep your crankcaseSpeedmaster Forged pistons are made from 4032 aluminum alloy for quieter operation and reduced piston to wall clearance. Up to 20% lighter than traditional forged pistons that eliminate harmful stress concentrations for superior strength. Specifically designed for naturally aspirated or moderate nitrous applications.